JPS62279916A - Method of cooling hydraulic oil in injection molding machine - Google Patents
Method of cooling hydraulic oil in injection molding machineInfo
- Publication number
- JPS62279916A JPS62279916A JP61123096A JP12309686A JPS62279916A JP S62279916 A JPS62279916 A JP S62279916A JP 61123096 A JP61123096 A JP 61123096A JP 12309686 A JP12309686 A JP 12309686A JP S62279916 A JPS62279916 A JP S62279916A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic oil
- tank
- heat
- heat radiation
- radiation pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000001746 injection moulding Methods 0.000 title claims description 9
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000498 cooling water Substances 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分野〕
この発明は合成樹脂の成形に用いられる射出成形閤にお
ける作動油の冷却方法に関するものである。Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) This invention relates to a method for cooling hydraulic oil in an injection molding tool used for molding synthetic resin.
射出成形数における作動油の冷却は、作動油のドレーン
回路中に熱交換器を設けて行っている。Cooling of the hydraulic oil during injection molding is carried out by providing a heat exchanger in the hydraulic oil drain circuit.
また冷媒として水を使用しており、熱交換後の水はクー
リングタワーを用いて冷却されたのち水槽に戻されてい
る。In addition, water is used as a refrigerant, and the water after heat exchange is cooled using a cooling tower and then returned to the water tank.
水を冷媒とする従来の作動油の冷却方法では、冬季に気
温が零度以下になる地方では、長時間にわたり作業を休
止する場合、凍結防止の上から、熱交換器や配管内の冷
却水を扱く必要があり、これを怠ると凍結により破損す
ることがある。With the conventional method of cooling hydraulic oil using water as a refrigerant, in regions where the temperature drops below zero in the winter, when work is stopped for a long time, cooling water in heat exchangers and piping must be used to prevent freezing. Failure to do so may result in damage due to freezing.
また水槽はクーリングタワーと共に屋外に設置されてい
るため、周辺のほこりやごみ等が巻き込まれ、これが水
槽に溜ってヘドロとなり、更にはヘドロにより配管及び
熱交換器が目詰まりして熱交換率の低下や腐食の原因と
なった。Additionally, since the water tank is installed outdoors together with the cooling tower, surrounding dust and dirt gets caught in the water tank, accumulates in the water tank, becomes sludge, and furthermore, the sludge clogs the piping and heat exchanger, reducing the heat exchange efficiency. This caused corrosion.
このため定期的に水槽の水替えと掃除が必要となるが、
地下水を冷却水に使用しているところでは、水質による
ｇ食を、また交通量の激しい道路周辺にクーリングタワ
ーが設置されているところでは、冷却水に溶解した排気
ガス中の成分による腐食までをも防止することはできな
かった。For this reason, it is necessary to regularly change the water and clean the aquarium.
In places where underground water is used as cooling water, there is a risk of corrosion caused by water quality, and in places where cooling towers are installed near roads with heavy traffic, corrosion caused by components in exhaust gas dissolved in the cooling water can be avoided. It could not be prevented.
最近の射出成形機は省エネ化によって、電力消費量が小
さく設計され、それにより作動油の温度も以前はど上昇
しないようになった。囚に型締力１５０トンの射出成形
機の場合、室温２２℃で油温はＲ高４９℃（無冷却）で
一定となる。Modern injection molding machines are designed to consume less electricity, and the temperature of the hydraulic oil does not rise as much as before. In the case of an injection molding machine with a mold clamping force of 150 tons, the room temperature is 22°C and the oil temperature is constant at R height 49°C (no cooling).
また射出成形既に用いられる作動油の適正油温は、スペ
ックによれば５０℃とされ、夏季に空温が上昇しても油
温が５０℃以上に上昇しなければ、作動油を強制的に冷
却しなくとも良いことが明らかとなった。In addition, according to the specifications, the appropriate oil temperature for the hydraulic oil already used in injection molding is 50℃, so even if the air temperature rises in the summer, if the oil temperature does not rise above 50℃, the hydraulic oil must be forcibly replaced. It became clear that cooling was not necessary.
したがって、この発明の目的は、冷却水を用いずにタン
クに還流される作動油を５０℃以下に冷却し、冷却水に
よる上記従来の問題点を排除することができる新たな冷
却方法を提供することにある。Therefore, an object of the present invention is to provide a new cooling method capable of cooling hydraulic oil returned to a tank to 50° C. or lower without using cooling water and eliminating the above-mentioned conventional problems caused by cooling water. There is a particular thing.
上記目的によるこの発明は、射出装置と型締装置とを上
部に有する機台の側部に、放熱パイプをは台側壁と接し
て設け、その放熱パイプに機台内のタンクと上記各装置
のドレーンパイプとを接続し、上記機台を放熱熱体とし
て各装置から上記タンクに還流する作動油を冷却するこ
とを要旨とするものである。According to the present invention, a heat dissipation pipe is provided on the side of a machine base having an injection device and a mold clamping device on the top thereof, in contact with the side wall of the machine base, and the heat dissipation pipe is connected to a tank in the machine base and each of the above-mentioned devices. The gist is to connect a drain pipe and use the machine base as a heat radiating body to cool the hydraulic oil flowing back from each device to the tank.
図中１は鋼板をもって構成された機台で、上部に油圧作
動の射出装置２と型締装置３とが設置しである。In the figure, reference numeral 1 denotes a machine base composed of a steel plate, on which a hydraulically operated injection device 2 and a mold clamping device 3 are installed.
また機台内部では、電導機４を備えた油圧ポンプ５と、
タンク６及び配管ブロック７のそれぞれを多数の管路８
により接続し、タンク６の作動油を油圧ポンプ５により
加圧して、上記各装置２゜３の油圧シリンダ９．１０に
供給し、またタンク６へ還流する油圧回路装置が設けで
ある。Also, inside the machine, a hydraulic pump 5 equipped with a conductor 4,
Each of the tank 6 and the piping block 7 is connected to a large number of piping lines 8.
A hydraulic circuit device is provided which pressurizes the hydraulic oil in the tank 6 with a hydraulic pump 5, supplies it to the hydraulic cylinders 9 and 10 of each of the above-mentioned devices 2 and 3, and returns it to the tank 6.
１１は放熱パイプで、機台１の三方の下側部に溶接など
の手段により、側壁と接して設けられ、かつ一端部は上
記タンク６と連通させである。またこの放熱パイプ１１
の他端側には、上記油圧シリンダ９．１０のドレーンパ
イプ１２．１３が接続され、油圧シリンダ９，１ｏから
の作動油は、そのドレーンパイプ１２．１３から放熱パ
イプ１１を経てタンク６に還流するようになっている。Reference numeral 11 denotes a heat dissipation pipe, which is provided at the lower side of the machine base 1 on three sides by means such as welding so as to be in contact with the side wall, and one end thereof is communicated with the tank 6. Also, this heat radiation pipe 11
The drain pipe 12.13 of the hydraulic cylinder 9.10 is connected to the other end, and the hydraulic oil from the hydraulic cylinder 9, 1o is returned to the tank 6 from the drain pipe 12.13 via the heat radiation pipe 11. It is supposed to be done.
このため各油圧シリンダ９．１０から吐出された作動油
が重油よりも著しく高温であっても、作動油が有する熱
は、放熱パイプ１１より機台１に伝わり、機台側壁から
放熱されるため、タンク６に流入するまでに降下する。Therefore, even if the hydraulic oil discharged from each hydraulic cylinder 9 or 10 is significantly higher in temperature than heavy oil, the heat contained in the hydraulic oil is transmitted to the machine base 1 through the heat radiation pipe 11 and radiated from the machine base side wall. , descends until it flows into tank 6.
この結果、作動油を熱交換器に通して冷却する必要がな
く、室温３５℃程度の場合であっても油温が５０℃を越
えるようなことがなくなる。As a result, there is no need to cool the hydraulic oil by passing it through a heat exchanger, and the oil temperature does not exceed 50°C even when the room temperature is about 35°C.
（発明の効果〕
この発明は上述のように、機台の側部に、放熱パイプを
機台側壁と接して設け、その放熱パイプに機台内のタン
クと射出装置及び型締設冒側のドレーンパイプとを接続
し、放熱パイプを通過する作動油の熱を冷却水を用いず
に機台を放熱体として発散させることから、クーリング
タワーや水槽が不要となり、冷却水の配管も必要なくな
る。また水槽内のヘドロにより弊害もなくなり、腐食の
問題も解決されるなどれ冷却水による場合の多くの欠点
を排除できるばかりか、放熱パイプによってタンク容積
を小さくすることができ、機台内を有効に利用すること
もできる。しかも放熱パイプを機台側部に接して設ける
だけでよいがら構造も簡単で、従来の射出成形機にも応
用でき、冷却に費用もかからないので経済性をも有する
など産業上の効果は多大である。(Effects of the Invention) As described above, this invention provides a heat dissipation pipe on the side of the machine base in contact with the side wall of the machine base, and the heat dissipation pipe connects the tank in the machine base, the injection device, and the outside side of the mold clamping area. Since it is connected to a drain pipe and the heat of the hydraulic oil passing through the heat radiation pipe is dissipated using the machine base as a heat radiator without using cooling water, there is no need for a cooling tower or water tank, and there is no need for cooling water piping.Also. Not only does it eliminate the harmful effects of sludge in the water tank and solve the problem of corrosion, it also eliminates many of the drawbacks associated with cooling water, and the heat dissipation pipe allows the tank volume to be reduced, making the inside of the machine more efficient. In addition, the structure is simple, as it only requires installing a heat dissipation pipe in contact with the side of the machine, and it can be applied to conventional injection molding machines, and it is also economical as cooling costs are low. The above effects are significant.
図面はこの発明に係る方法を実施した射出成形機を示す
もので、第１図は要部縦断正面図、第２図は第１図■−
■線断面図である。
１・・・機台 ２・・・射出装置３・・・型締装
置 ６・・・タンク
１１・・・放熱パイプThe drawings show an injection molding machine that implements the method according to the present invention, and FIG. 1 is a longitudinal sectional front view of the main part, and FIG.
■It is a line sectional view. 1... Machine base 2... Injection device 3... Mold clamping device 6... Tank 11... Heat radiation pipe
Claims (1)
熱パイプを機台側壁と接して設け、その放熱パイプに機
台内のタンクと上記各装置のドレーンパイプとを接続し
、上記機台を放熱熱体として各装置から上記タンクに還
流する作動油を冷却することを特徴とする射出成形機に
おける作動油冷却方法。A heat radiation pipe is provided on the side of the machine base having the injection device and the mold clamping device on the top thereof, in contact with the side wall of the machine base, and the tank in the machine base and the drain pipe of each of the above devices are connected to the heat radiation pipe, A method for cooling hydraulic oil in an injection molding machine, characterized in that the machine base is used as a heat dissipating body to cool hydraulic oil flowing back from each device to the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123096A JPH0729351B2 (en) | 1986-05-28 | 1986-05-28 | Cooling method for hydraulic oil in injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123096A JPH0729351B2 (en) | 1986-05-28 | 1986-05-28 | Cooling method for hydraulic oil in injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62279916A true JPS62279916A (en) | 1987-12-04 |
| JPH0729351B2 JPH0729351B2 (en) | 1995-04-05 |
Family
ID=14852102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61123096A Expired - Lifetime JPH0729351B2 (en) | 1986-05-28 | 1986-05-28 | Cooling method for hydraulic oil in injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729351B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0331933U (en) * | 1989-08-03 | 1991-03-28 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202010006624U1 (en) | 2010-05-10 | 2010-08-05 | Manitowoc Crane Group France Sas | Crane jib, in particular mobile crane jib, with prestressed tension elements |
| CN104265737A (en) * | 2014-09-12 | 2015-01-07 | 苏州好特斯模具有限公司 | Rapid cooling waterway supporting plate |
-
1986
- 1986-05-28 JP JP61123096A patent/JPH0729351B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0331933U (en) * | 1989-08-03 | 1991-03-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729351B2 (en) | 1995-04-05 |
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